(obsolete) Mentally dull; stupid.

(computing) A collision of the head of a hard drive with the platter, resulting in permanent damage to the hard drive.

plural of rail head

(colloquial, dated) stupid

(nautical) A bulkhead on the forecastle and halfdeck of a ship.

plural of cubbridge-head

Alternative form of niggerhead

Having two heads; two-headed.

Having two heads or faces on one body. / Directed by two heads or chiefs; existing under two coordinate authorities.

plural of bone head